STB1013 Cell Biology Basic Properties of Cells 1. What are the fundamental properties that are shared by all Cells? 2. Describe the importance of each of these properties. STB1013 Cell Biology Basic Properties of Cells Life is the most basic property of cells; they are the smallest units to exhibit this property; plant or animal cells can be removed from organism & cultured in laboratory Cultured cells are simpler to study than cells in body; cells grown in vitro (in culture
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SourceChlorophyll and Accessory Pigments Absorb energyWater Hydrogen Donor/ Releases O2 ADP P Combine to make ATP NADP Hydrogen Electron Carrier StromaCO2 Carbon SourceRuBP Takes up CO2 ATP Provides EnergyNADPH Provides Hydrogen Electrons PGAL End Product of Dark Reactions Cellular Respiration Introduction Comparison with photosynthesis PHOTOSYNTHESISRESPIRATIONWhereIn cholorophyll-bearing cellsIn all cellsWhenIn the presence of lightAll the timeInputCarbon dioxide and waterReduced carbon compounds and oxygenOutputReduced
Free Cellular respiration Adenosine triphosphate
of an additional phosphate group on the 2’ position of the ribose ring that carries the adenine moiety.In photosynthetic organisms‚ NADPH is produced by ferredoxin-NADP+ reductase in the last step of the electron chain of the light reactions of photosynthesis. It is used as reducing power for the biosynthetic reactions in the Calvin cycle to assimilate carbon dioxide. Synthesis The oxidative phase of the pentose phosphate pathway is a major source of NADPH in cells‚[1] and in cells without mitochondria
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Role of Stomata & Control Stomata : a pore found in the epidermis of plants which are used to control as exchange Main function of stomata : Allow enough C02 to enter the leaf to optimize photosynthesis‚ while conserving as much water as possible Structure of stomata * Each stomata consists of a stoma (minute pore) which are surrounded by 2 guard cells. * Stomata closes and opens according to the turgidity of the guard cells * Stomata also allows for cooling of the leaf by loss
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grown through the United States and Canada. Now High density ‚ Low-density. In either case‚ photosynthesis will be key. Photosynthesis is “The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct” . The main job of photosynthesis is to convert CO2‚ H20‚ and light into sugar‚ or food‚ and oxygen. Now‚ to create these products‚ two processes
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ASU BIO 100 Exam 4 Practice Questions 1. Because of evolutionary descent‚ many species share characteristics with other species to which they are related. Indeed‚ according to evolutionary theory‚ all living species are descended from some common ancestor in the ancient past. What evidence supports this conclusion that ALL living species are related to each other? Shared traits in the fossil record; Genetic Code; DNA Structure of all living organisms 2. For some time‚ Russian prisons have been
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3) Volcanoes gave out gases: CO2‚ water vapour and small amounts of other gases. (water and oceans formed) 4) The early atmosphere: mostly CO2‚ with no oxygen. 5) The oceans formed when the water vapour condensed. Phase 2- Green plants evolved and produced oxygen. 1) A lot of CO2 dissolved into the oceans. 2) Marine organisms developed which took some of this CO2. When they died the organisms were buried under layer of sediments and the CO2 became “locked up” in carbonate rocks
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in plants is a combination of (1) it’s tendency to move in response to differences in solute concentration and (2) the pressure exerted on it Plants do not expend energy to replace water that is lost to transpiration when stomata are open and photosynthesis is occurring. Instead‚ water moves from soil and roots to leaves long a water potential gradient. The gradient exists because water at the air0water surface in leaves in under negative pressure (tension) The phloem‚ sugars are transported from
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produce biofuel. Genetically modified blue and green algae could be the answer to the world’s fuel problems. Bioengineers have already developed algae that produce ethanol‚ oil and even diesel -- and the only things the organisms need are sunlight‚ CO2 and seawater. For reasons of data protection and privacy‚ your IP address will only be stored if you are a registered user of Facebook and you are currently logged in to the service. For more detailed information‚ please click on the "i" symbol. Biochemist
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Biology Midterm Outline Topics: * Topic One: Chemistry of Living Things (p2-4) * Topic Two: The Cell (p5-6) * Topic Seven: Evolution (p23-27) * Topic Ten: State Labs (37-40) Topic One: Chemistry of Living Things I. All living things must maintain homeostasis in order to stay alive. A) Homeostasis: A balanced state in an organism’s body. B) Failure to maintain homeostasis results in disease or death. C) Homeostasis is often maintained using feedback mechanisms. 1. Feedback mechanisms
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